OBD-II code · Powertrain (generic)
P02BA Cylinder 9 - Fuel Trim at Max Limit
Per-cylinder fuel trim on cylinder 9 has reached its maximum correction limit. Cylinder running too lean structurally.
Is it safe to drive with P02BA?
Usually safe for short trips, but don’t ignore it: the underlying fault can get more expensive over time.
Common causes
- Most likelyCylinder 9 running structurally lean
Repair at a glance
- Difficulty
- Hard
- DIY friendly
- Best left to a mechanic
- Typical labour
- 1–6 h
- Emissions test
- Likely to fail
- Parts involved
- Fuel Injector
Related codes
- P029ACylinder 1 - Fuel Trim at Max Limit
- P029ECylinder 2 - Fuel Trim at Max Limit
- P02A2Cylinder 3 - Fuel Trim at Max Limit
- P02A6Cylinder 4 - Fuel Trim at Max Limit
- P02AACylinder 5 - Fuel Trim at Max Limit
- P02AECylinder 6 - Fuel Trim at Max Limit
- P02B2Cylinder 7 - Fuel Trim at Max Limit
- P02B6Cylinder 8 - Fuel Trim at Max Limit
- P02BECylinder 10 - Fuel Trim at Max Limit
- P02C2Cylinder 11 - Fuel Trim at Max Limit
- P02C6Cylinder 12 - Fuel Trim at Max Limit
- P02B7Cylinder 8 - Fuel Trim at Min Limit
- P02B8Cylinder 8 - Injector Restricted
- P02B9Cylinder 8 - Injector Leaking
- P02BBCylinder 9 - Fuel Trim at Min Limit
- P02BCCylinder 9 - Injector Restricted
- P02BDCylinder 9 - Injector Leaking
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.